Safety elevator device



(No Model.)

H. H. DAY.

` SAFETY BLBVATOR DEVICE.

N0.493,760.- I PatentedMar.

Suva/Who@ lNrrEn STETEs PATENT OFFICE.

HENRY HALE DAY, OF NEWTON, MASSACHUSETTS.

SAFETY ELEVATOR DEVICE.

SPECIFICATION forming part of Letters Patent No. 493,760, dated March21, 1893.`

Application filed November 4, 1892. Serial No, 451.004. (No model.)

T0 a/ZZ whom it may concern.-

Be it known that I, HENRY HALE DAY, a citizen of the United States,residing at Newton, in the county of Middlesex and State ofMassachusetts, have invented certain new and useful Improvements inSafety Elevator Devices; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to safety attachments for elevators forautomatically and instantaneously stopping the ascent of an elevatorcaras it approaches the floors through which the elevator shaft extendswhenever any portion of a person, or article in the door way of anyfloor or the door way of the car tends to obstruct the passage of thecar by contact with either the car or the door way of the floor, as thecase may be.

The object of my invention is to providea safety devicefor elevator carswhich is silnple in construction, inexpensive, and which may be readilyattached to any elevator.

A further object is to provide means where by it will render itimpossible fora passenger to be caught between the elevator and doorway, in case the car has not stopped or has suddenly started to ascendbefore the person has gotten safely on or off the car.

Finally the object of my invention is to provide a safety elevatordevice of simple construction, of a few parts, and less apt to becomeinoperative or to get out of repair than safety devices heretoforeknown.

To these ends the invention consists in the construction and arrangementof parts hereinafter fully described and particularly pointed out in theclaim.

In the accompanying drawings, corresponding letters and figures indicatelike parts throughout the several views:

Figure l is a perspective view, taken from the rear end of the elevatorshaft, parts belng broken away, to show the elevator car ascending, adoor Way with the safety device attached, to the door way, and to thewall of the elevator shaft to instantaneously stop the elevator car inits ascent in case of an accident. Fig. 2 is a perspective view of aspring device attached to the wall of the elevator shaft, forming partof the safety elevator device for operating a cable to stop the car inease of accident. Fig. 3 is a detail of a guide rod and rollers whichare mounted on the frame work inside and over a door way to the`elevator shaft.

A refers tothe elevator car.

B is a door way to the elevator shaft.

C refers to frame work in the door way of a floor between which and thegrating, an elevator door D slides to allow means for ingress andegress'to and from the elevator car.

E are vertical guide rods mounted on frame C on each side of the doorway near its top to permit the vertical play of a frame E mountedtherein as shown.

G are vertical guide rods securely fastened at their lower ends to frameF and passing between guide rollers l-I suitably mounted on frame O toguide frameF in its vertical movement.

H is a frame work suitably secured to one of thel walls of the elevatorshaft and provided with depending rods I which are surrounded by springwire coils J securely fastened at their upper extremities to frame H,and at their lower ends to a bar K with apertures near its end throughwhich rods I extend.

L is a support of suitable form fastened to the wall of the elevatorshaft directly in rear of frame H to hold in a horizontal position arest M with two arms, as shown. This rest M which is securely fastenedto the wall of the shaft by means of a staple, as shown in Fig. 2, holdsplate K in an elevated position thus compressing springs J when the restis in a perpendicular position with respect to the wall and held in thatposition by resting on its support L. The front ends of rest M may bebent over to loosely clasp plate K or be otherwise attached thereto iffound convenient.

N is a wire or cord attached at one end to rest M and extends throughsuitable guide ways on the walls of the elevator shaft and frame C, andis held taut and is securely fastened at its other end to the upperextremity of one of the guide rods Gr.

O is a cable extending from the valve controlling mechanism of themotive power at one side of the elevator shaft, through aperture inplate K to the upper end of the shaft,

IOO

and has secured thereon under and in close proximity to plate K in itselevated position, a stop 2. Cable O operates the controlling valvemechanism to stop the elevator, when pulled slightly downward,independently of cable P which is used for that purpose by the elevatoroperator.

The operation of the safety device is as follows: The frameF and springdevice attached to the wall of the elevator shaft are adjusted in theposition shown in Figs. l and 2, the spring J being compressed and heldin that position by rest M which in turn is held in a perpendicularposition with respect to the wall by support L. In case a person or anyarticle should be caught between the door way of any floor and the carin its ascent, the person or obstacle would first come in contact withframe F which would raise the same in its guide rods E, and by means ofcord or Wire N attached to one of the guide rods G would pull rest M offits support L thus permitting the tensions of springs J to assertthemselves, force plate K downward thereby causing the same to contactwith stop 2 on cable O pulling the cable downward and stopping theelevator car before or by the time frame F had been forced to the upperpart of the guide ways formed by guide rods E. The obstacle to theprogress ot' the car can then be removed, the spring device and frame Fbe adjusted in the position shown for operation, in case of a secondaccident. Frames F, guide rods G, rollers and cords may be used toconnect this spring device with the door ways of the different floors ofthe shaft, and more than one spring device may be attached to the wallof the elevator shaft in long shafts, or where found to be convenient.

I do not claim in this application the safety 4o device forinstantaneously stopping an elevator in its descent in case of accident,the same being claimed in my application, Serial No. 450,682 filedNovember l, 1892.

It is evident that many changes may be made in the arrangement andconstruction of parts without departing from the spirit of my invention.

What I claim, and desire to secure by Letters Patent, is-

In an elevator, the combination, with an elevator car and an operatingcable provided with a stop, of a movable frame mounted on a side of theelevator shaft adjacent to the door-way, a spring-pressed device mountedon one wall of the shaft and adapted to engage the cable-stop, means fornormally supporting said spring device against the tension of the springand out of engagement with the stop, and a connection between themovable frame and the spring-pressed device whereby, when in the ascentof the elevator car an obstruction meets the movable frame, the springdevice will be released from the supporting means and thereby engage thecable stop to arrest the car, substantially as described and set forth.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY HALE DAY.

W'itnesses:

S. F. S. MoR'roN, JULIET DAY.

